"" + c vs. Character.toString(c)

TestChar.java

public class TestChar {
  public static void main(String[] args) {
    long tests = 1000000000;
    char c = 'c';

    long start = System.nanoTime();
    for (int i = 0; i < tests; i++) {
      String a = "" + c;
    }
    System.out.println("Done: " + (System.nanoTime() - start) / 1000000000.0);

    start = System.nanoTime();
    for (int i = 0; i < tests; i++) {
      String a = Character.toString(c);
    }
    System.out.println("Done: " + (System.nanoTime() - start) / 1000000000.0);
  }
}

/**
 * ➜  ~  java TestChar
 * Done: 3.36814261
 * Done: 3.232308615
 * ➜  ~
**/